bug fix in pastro

$\frac{f(x)}{b(x)}=Ae^{x}$

and

$\int f(x)dx =1 = \int dx b(x)$

which means

$A=\frac{1}{ \frac{\int dxb(x)e^{x}}{\int dy b(y)}}$

requested review from @daniel.wysocki

assigned to @vinaya.valsan

added 1 commit

• 0837f82a - fix

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mentioned in commit ed8febbd

merged